コルーチンの戻り値

CoroutineSample2.cs

using UnityEngine;
using System.Collections;
using System.Collections.Generic;

public class CoroutineSample2 : MonoBehaviour 
{
	[SerializeField]
	Renderer leftRenderer = null, rightRenderer = null;

	void OnMouseDown()
	{
		StartCoroutine(ChangeColorCoroutine());
	}

	IEnumerator ChangeColorCoroutine()
	{
		float sum = 0;
		var leftCoroutine = StartCoroutine(ChangeColorCoroutineWithRuntimetime(leftRenderer, (result)=> sum += result));
		var rightCoroutine = StartCoroutine(ChangeColorCoroutineWithRuntimetime(rightRenderer, (result)=> sum += result));

		yield return leftCoroutine;
		yield return rightCoroutine;

		// 待機時間の合計をログに出力
		Debug.Log(sum);
	}

	IEnumerator ChangeColorCoroutineWithRuntimetime(Renderer renderer, UnityEngine.Events.UnityAction<float> callback)
	{
		float waitSec = Random.Range(0.2f, 1f);
		yield return new WaitForSeconds(waitSec);

		// 待機した時間を返す
		callback(waitSec);
	}
}